Author Topic: '77 CB750 K7 café - Here I go again (Read 17265 times)

jaycox · « **Reply #50 on:** March 09, 2016, 07:11:04 AM »

I have to ask, are those levers in stock perches? If so where did you get them? I had a set on my last bike and really liked them, but don't need everything

Andy K · « **Reply #51 on:** March 09, 2016, 11:36:11 PM »

I bought full set from eBay..

Andy K · « **Reply #52 on:** March 19, 2016, 04:24:08 AM »

welcome summer

.. where are you?

Andy K · « **Reply #53 on:** March 19, 2016, 04:37:47 AM »

And of course little test ride.. small one

my middle son was immediately coming ride with me. not yet.. later when weather is warmer, now it was -10 degrees.. and ice on roads

SOHC4 Cafe Racer Fan · « **Reply #54 on:** March 19, 2016, 03:37:52 PM »

Yikes!

Sunny and warm today. 70 degrees F/21 C

Andy K · « **Reply #55 on:** April 03, 2016, 12:27:35 PM »

okay... can ride but still something is wrong.

Emgo pods, 120 main jets, 35 pilot jets, air mix 2 turn out from seated, needles one clip lower from middle of five (richer).. still need choke that can ride normally.. need 125 jets or bigger? needle clips lowest (richest) set?

calj737 · « **Reply #56 on:** April 03, 2016, 03:47:01 PM »

sounds like your 35's are too small to me...

Andy K · « **Reply #57 on:** April 04, 2016, 12:48:10 AM »

need to check float level first. I think they are reason to this.. or not. maybe floats are too low that pilot jets can't get fuel enough. that is why have to pull choke, main jet helps pilot jet..

Andy K · « **Reply #58 on:** April 06, 2016, 02:42:23 AM »

great!! regulator is broke..

Do regulator need all three wires black,white and green... what about reg/rec combo where is only black and white wires??

Andy K · « **Reply #59 on:** April 06, 2016, 08:23:47 AM »

..or wires in front light cover are wrong places.. or new igniton swich is broke or.. or.. or.. testing and troubleshootin begins again.

Andy K · « **Reply #60 on:** April 11, 2016, 05:46:29 AM »

now it's not even try to start.. little bit pissed right now..

I don't understant what is happened.. light fuse burned couple time.. check the wires, was driveable but now it do nothing.

calj737 · « **Reply #61 on:** April 11, 2016, 05:56:26 AM »

Quote from: Andy K on April 11, 2016, 05:46:29 AM

now it's not even try to start.. little bit pissed right now..

Is that to say it has no "spark" or the motor is turning but won't catch? Have you checked the MAIN fuse? If the fuse is in tact, and the motor is cranking, but not firing, check for 12v at the coils on the BLK/WHT wire to verify the KILL/RUN switch is still operational.

Andy K · « **Reply #62 on:** April 13, 2016, 08:45:04 PM »

battery empty..offcourse. load... meanwhile loading battery I look wires again. so..wiring diagram on hand.

With full battery and change some wires places works better but still battery goes empty pretty fast. I pressed start button couple of times and it turns engine but suddenly only "bbzzzzz" sound from solenoid.. battery is new but is it dead allready? have to fired up the engine (float level adjust first!) and test how much it's load from engine..

Andy K · « **Reply #63 on:** April 15, 2016, 12:32:44 AM »

now it's getting weird..

float level adjusted and fired up the bike (with bigger help battery) terrible
missfires but the weird thing is that when I turn lights off bike runs better than ever!! whaaat?!?! lights takes all power.. what a he..

calj737 · « **Reply #64 on:** April 15, 2016, 02:54:52 AM »

So it sounds like you may have 2 problems: first problem is likely that the battery is now "bad". If it recharges, but drains promptly, probably it needs replacement. Charge it fully, then let it stand off the charger for 2 hours and measure the voltage directly at the battery. What is it?

You posted earlier that your Regulator was "broken". How did you fix it? And please provide some details on how you wired the bike up. The reason I ask is, the stock charging system is pretty weak when idling, and it will operate in a deficiency (drain) until the motor is revving past +2,000 RPMs. So with the motor running, test the voltage at the battery at idle, 3,000 RPMs, 4,000 and 5,000 RPMs. What are these readings? This is a good indication if the bike is "charging".

Even if your bike is charging, but your battery is bad, the bike will run quite poorly. Are you still running the stock ignition? Stock coils?

Lastly, while troubleshooting, it's a good idea to remove the headlight fuse to eliminate the drain in the charging system until the bike is operating fully. And of course, is the headlight the stock wattage?

Andy K · « **Reply #65 on:** April 17, 2016, 09:45:54 PM »

earlier I find out that when bike is running and lights on, front light get more bright when turn revs from engine. I think that power comes straight from stator to front light. I loaded battery (new battery, bought on September, put in bike this spring) and volts shows 10,6.. put ignition on (with lights) volts drop about 6 to 7, and press start witch, volts dropped under 4!!

every power supply is stock only tail light and speedometer is aftermarket parts

with help power started the bike and put RPM.. Volts stands under 8V! F*****k!!!

(new)battery is been in bike only couple months.. maybe batteries could die this fast?

I haven't fix the regulator, only thought that it could be broken.

Good thing is that engine runs great but without lights and starts amazing easy with kickstart

madmtnmotors · « **Reply #66 on:** April 17, 2016, 09:48:46 PM »

Charge the battery. You have to start out with a fully charged battery. The alternator will not work properly if you do not have 12v (or more) at the battery before starting.

Andy K · « **Reply #67 on:** April 18, 2016, 02:00:43 AM »

done that.. not work. With full battery it will empty very fast. Need to test today with other motorcycle battery from another bike which working normal. Then is possible to find is it battery dead or my charger just won't load like it should be and I have low battery voltage all time.

weird thing is no matter which rpm is, there is no changes in volts..

topperharley · « **Reply #68 on:** April 18, 2016, 03:55:42 AM »

You can try with aftermarket reg/rec.
I had loadin issues but that was a wiring problem about reg/rec Did you connect the wires right? I posted pm about this in finnish. Pistin yv:tä.
http://forums.sohc4.net/index.php?topic=156830.0

calj737 · « **Reply #69 on:** April 18, 2016, 04:01:22 AM »

Quote from: Andy K on April 17, 2016, 09:45:54 PM

I loaded battery (new battery, bought on September, put in bike this spring) and volts shows 10,6.. put ignition on (with lights) volts drop about 6 to 7, and press start witch, volts dropped under 4!!

Your battery is toast. If after charging it only reaches 10.6v, replace it (again). What type of battery are you using?

madmtnmotors · « **Reply #70 on:** April 18, 2016, 04:03:33 AM »

Check here for very detailed charging system troubleshooting (scroll down to the charging system section):

http://www.hondachopper.com/garage/troubleshooting_charging_system/troubleshooting_charging_system.pdf

and here:

http://forums.sohc4.net/index.php/topic,1012.msg8345.html#msg8345

Andy K · « **Reply #71 on:** April 19, 2016, 10:20:23 AM »

holy sh...! I can't be leave it it works again

I test volts around the bike about an hour and take regulator off and wondering what a hec is wrong with this? I watch pictures on internet and suddenly I got it! There is sticker (black-white-green) on side of regulator and suprise suprise when I'm taken the regulatorcover off before, I've putt the cover back wrong side!! so the colours are opposite..Stupid and funny own mistake at same time.. now I got 14.5V in battery.

Sorry and thank you

calj737 · « **Reply #72 on:** April 19, 2016, 11:34:37 AM »

It's not uncommon to discover the problem is between the wrench and the regulator

Andy K · « **Reply #73 on:** May 11, 2016, 03:43:12 AM »

couple pics.. bike feels good. I'm happy now. License plate frame had to move left side because rear tire hit on it. So tail light frame is pretty different but same place.

Andy K · « **Reply #74 on:** September 08, 2016, 11:19:47 AM »

Long time no seen!!
quess what??

I take engine apart.. why? oil leaking from cylinder head. Just I get bike works great and made some adjusting to carbs, oil made my legs wet..

So the enginw is peaces and goin to change cam chain and primary chain and tensioners offcourse.

News:

Author Topic: '77 CB750 K7 café - Here I go again (Read 17265 times)